/// <summary>
/// 增加一条数据
/// </summary>
public int Add(OLBookstore.Model.ReaderComments model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into ReaderComments(");
strSql.Append("BookId,ReaderName,Title,Comment,Date)");
strSql.Append(" values (");
strSql.Append("@BookId,@ReaderName,@Title,@Comment,@Date)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@BookId", SqlDbType.Int, 4),
new SqlParameter("@ReaderName", SqlDbType.NChar, 10),
new SqlParameter("@Title", SqlDbType.NVarChar, 100),
new SqlParameter("@Comment", SqlDbType.NVarChar, 300),
new SqlParameter("@Date", SqlDbType.DateTime)
};
parameters[0].Value = model.BookId;
parameters[1].Value = model.ReaderName;
parameters[2].Value = model.Title;
parameters[3].Value = model.Comment;
parameters[4].Value = model.Date;
object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public OLBookstore.Model.ReaderComments DataRowToModel(DataRow row)
{
OLBookstore.Model.ReaderComments model = new OLBookstore.Model.ReaderComments();
if (row != null)
{
if (row["Id"] != null && row["Id"].ToString() != "")
{
model.Id = int.Parse(row["Id"].ToString());
}
if (row["BookId"] != null && row["BookId"].ToString() != "")
{
model.BookId = int.Parse(row["BookId"].ToString());
}
if (row["ReaderName"] != null)
{
model.ReaderName = row["ReaderName"].ToString();
}
if (row["Title"] != null)
{
model.Title = row["Title"].ToString();
}
if (row["Comment"] != null)
{
model.Comment = row["Comment"].ToString();
}
if (row["Date"] != null && row["Date"].ToString() != "")
{
model.Date = DateTime.Parse(row["Date"].ToString());
}
}
return(model);
}
private void ShowInfo(int Id)
{
OLBookstore.BLL.ReaderCommentsManager bll = new OLBookstore.BLL.ReaderCommentsManager();
OLBookstore.Model.ReaderComments model = bll.GetModel(Id);
this.lblId.Text = model.Id.ToString();
this.txtBookId.Text = model.BookId.ToString();
this.lblReaderName.Text = model.ReaderName;
this.txtTitle.Text = model.Title;
this.txtComment.Text = model.Comment;
this.txtDate.Text = model.Date.ToString();
}
protected void btnSave_Click(object sender, EventArgs e)
{
string strErr = "";
if (!PageValidate.IsNumber(txtBookId.Text))
{
strErr += "BookId格式错误！\\n";
}
if (this.txtReaderName.Text.Trim().Length == 0)
{
strErr += "ReaderName不能为空！\\n";
}
if (this.txtTitle.Text.Trim().Length == 0)
{
strErr += "Title不能为空！\\n";
}
if (this.txtComment.Text.Trim().Length == 0)
{
strErr += "Comment不能为空！\\n";
}
if (!PageValidate.IsDateTime(txtDate.Text))
{
strErr += "Date格式错误！\\n";
}
if (strErr != "")
{
MessageBox.Show(this, strErr);
return;
}
int BookId = int.Parse(this.txtBookId.Text);
string ReaderName = this.txtReaderName.Text;
string Title = this.txtTitle.Text;
string Comment = this.txtComment.Text;
DateTime Date = DateTime.Parse(this.txtDate.Text);
OLBookstore.Model.ReaderComments model = new OLBookstore.Model.ReaderComments();
model.BookId = BookId;
model.ReaderName = ReaderName;
model.Title = Title;
model.Comment = Comment;
model.Date = Date;
OLBookstore.BLL.ReaderCommentsManager bll = new OLBookstore.BLL.ReaderCommentsManager();
bll.Add(model);
Maticsoft.Common.MessageBox.ShowAndRedirect(this, "保存成功！", "add.aspx");
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(OLBookstore.Model.ReaderComments model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update ReaderComments set ");
strSql.Append("BookId=@BookId,");
strSql.Append("Title=@Title,");
strSql.Append("Comment=@Comment,");
strSql.Append("Date=@Date");
strSql.Append(" where Id=@Id");
SqlParameter[] parameters =
{
new SqlParameter("@BookId", SqlDbType.Int, 4),
new SqlParameter("@Title", SqlDbType.NVarChar, 100),
new SqlParameter("@Comment", SqlDbType.NVarChar, 300),
new SqlParameter("@Date", SqlDbType.DateTime),
new SqlParameter("@Id", SqlDbType.Int, 4),
new SqlParameter("@ReaderName", SqlDbType.NChar, 10)
};
parameters[0].Value = model.BookId;
parameters[1].Value = model.Title;
parameters[2].Value = model.Comment;
parameters[3].Value = model.Date;
parameters[4].Value = model.Id;
parameters[5].Value = model.ReaderName;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public OLBookstore.Model.ReaderComments GetModel(int Id)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 Id,BookId,ReaderName,Title,Comment,Date from ReaderComments ");
strSql.Append(" where Id=@Id");
SqlParameter[] parameters =
{
new SqlParameter("@Id", SqlDbType.Int, 4)
};
parameters[0].Value = Id;
OLBookstore.Model.ReaderComments model = new OLBookstore.Model.ReaderComments();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
